If you want to be a draftsman, a machinist, a molder, or a patternmaker, you'll need algebra and geometry and even trigonometry.
如果
成为手工艺人、缝纫工、造型工或制模工，需要代数和几何，甚至三角学。
词If you want to be a draftsman, a machinist, a molder, or a patternmaker, you'll need algebra and geometry and even trigonometry.
如果成为手工艺人、缝纫工、造型工或制模工，需要代数和几何，甚至三角学。
The machinists only pay lip service to the safety regulations and one day soon there is going to be a nasty accident.
机械师们对安全条例只是口头上
守,总有一天要出大事故的。
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